| Effective fieldwide cyclic steam stimulation simulation is still in the future, when the next generation computers become available. It is recognized in the industry that only a limited number of wells can be included in a thermal simulation. Even at present, a fieldwide cyclic steam stimulation simulation requires a tremendous amount of computer storage and computation time. Yet, such a simulation customarily employs a rectilinear grid that is inadequate for simulating radial flow--an essential flow feature of cyclic steam stimulation--near the wells. In recognition of the fact that the next generation computers are nearby, the objective of this work is to develop a tool that will assist the simulation engineers in their field studies. The existence of the next generation of computers will not eliminate the need to have radial geometry around the wells.;A steam injection reservoir simulator was developed with the objective of improving the resolution of the information concerning the flow around a well and between wells. To accomplish this objective, it was necessary to develop the contiguous hyperhybrid grid refinement method.;With better well region representation, it has been shown that hyperhybrid grid refinement is useful in studying well operating changes and well interactions, particularly when the regions are made contiguous. Local well effects, interwell interference, multiwell cyclic steaming and conversion to steamflood were examined using hyperhybrid grid refinement.;It is recommended that contiguous hyperhybrid grid refinement be used for analyzing problems where the local well region behaviour is important in the context of a field simulation. Furthermore, it is recommended that this refinement technique be used to study interwell interactions where near-well effects are important and the communication path between the wells requires better representation. |
